The rate of change of the surface area of a sphere of radius r when the radius is increasing at the rate of 2 cm / sec is proportional to

Questions from KCET 2022

1. For any integer , the remainder obtained when is divided by is

2. It is observed that for some integers and . Then

3. The sum of all the positive divisors of excluding and itself is

4. If then the value of is

5. If the value of a third order determinant is , then the value of the determinant formed by the cofactors will be

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